8165860 has 24 divisors (see below), whose sum is σ = 17221176. Its totient is φ = 3252480.

The previous prime is 8165813. The next prime is 8165867. The reversal of 8165860 is 685618.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3594816 + 4571044 = 1896^2 + 2138^2 .

It is not an unprimeable number, because it can be changed into a prime (8165867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4894 + ... + 6346.

It is an arithmetic number, because the mean of its divisors is an integer number (717549).

Almost surely, 2^8165860 is an apocalyptic number.

It is an amenable number.

8165860 is an abundant number, since it is smaller than the sum of its proper divisors (9055316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8165860 is a wasteful number, since it uses less digits than its factorization.

8165860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743 (or 1741 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 8165860 is about 2857.5968924955. The cubic root of 8165860 is about 201.3727232649.

It can be divided in two parts, 81658 and 60, that added together give a palindrome (81718).

The spelling of 8165860 in words is "eight million, one hundred sixty-five thousand, eight hundred sixty".